Spray nozzle



Dec. 29, 1953 W. M. CISSELL SPRAY NOZZLE Original Fi led Nov. 22, 1943INVENTOQ.

5 WlLLlAM M.C\55ELL BY him Patented Dec. 29, 195 3 SPRAY NOZZLE WilliamM. Cissell, Louisville, Ky., assignor to W. M. Cissell Mfg. Company,Incorporated, Louisville, Ky., a corporation of Kentucky Originalapplication November 22, 1943, Serial No. 511,353. Divided and thisapplication November 16, 1949, Serial No. 127,684

3 Claims.

This application is a division of application Serial No. 511,353, filedNovember 22, 1943, now abandoned.

My invention relates to improvements in valves, and has particularreference to valves employed on water-spray irons and water-spray gunsused in laundries and dry cleaning establishments.

This invention has -for its principal object to so construct thecomponent parts of the valve that they can be manufactured and readilyassembled at low cost, expeditiously taken apart with conventional toolsby the user for cleaning and/or replacement of the precision parts onwhich wear and fouling finally occur and at very low cost of time andmoney.

Another object of my invention is to provide a valve of the packlesstype in which a diaphragm seals the high pressure chamber from theactuating chamber.

A further object of my invention is to provide a valve having the seatfor the valve stem adjacent the discharge end of the discharge orifice,so as to eliminate chambers or conduits etc. on the discharge side ofthe valve stem in which condensation may occur and cause dripping.

Another object of my invention is to provide a valve of simplifiedmechanical construction and ofv sufficient sturdiness to withstand theextreme operating conditions encountered in laundries and dry-cleaningestablishments.

The advantages of these and other objects will become apparent as thefollowing description is read in connection with the accompanyingdrawing, in which:

Figure 1 is a plan view of a pressing iron equipped with a valve made inaccordance with the teaching of my invention, which iron is ordi narilyreferred to as a water-spray iron;

Figure 2 is a side elevational view of Figure l.

v Figure 3 is a sectional view taken along lines 3-3 of Figure 1.

Figure 4 is a sectional view taken along lines 44 of Figure 1, andillustrated with the handle 1 and arm Ia removed.

Figure 5 is a partial sectional view on an em larged scale showing thevalve "stem in engage- 'ment with the valve seat; and

I: collected in the chamber to provide the required pressure todischarge the condensation when the valve assembly is actuated. However,while this preferred construction and arrangement is described, it is tobe understood that the teachings of this invention may be employed onvalves intended for other purposes, and especially on valves forwater-spray guns that are used independently of pressing irons, or forspray-guns generally, where it is highly desirable to provide uniformatomization and freedom from drip or liquid blow-off."

With further reference to the drawings, it will be apparent that thevalve assembly at the forward end of the handle 2 comprises a casing ormain body 4; bonnet or plunger guide 5; ad-

justing cap 6; actuating handle I; compression spring 8; reciprocatingplunger 9; resilient diaphragm I0; valve-stem II; removable nozzle andvalve seat I2; and removable filter plug I3.

Referring in particular to Figures 3 and 4, it

will be apparent that the main body 4 is fixedly secured to the conduit3, and has a duct i4 communicating with the interior of the conduit 3.

The removable filter plug I3 has a-recess l5 communicating with the ducti4, and a filter medium l6, such as a fine wire mesh, closing theopening of the recess I5.

The removable plug 13 is threaded into the body member 4 and is providedwith a suitable gasket H to seal the same to the body member. The plugl3 also has an external annular groove I8 communicating with a duct I9in the main body, and an aperture 20 which provides a communicationbetween the cavity I5 in the filter plug I3 and the annular groove It.Thus, fluid pressure entering conduit 3 passes into the duct l4, throughthe filter medium l5 and into the cavity i5, thence through the aperture2!} into the annular groove I8 and then into the duct 19. The duct I9communicates with'the valve chamber 2i and thereby the fluid pressure isconducted into the valve chamber 2 I.

The plunger guide 5, as shown in Figure 2, is secured to the body member4 by a plurality of machine screws 22, and, as shown in Figures 3 and 4,the diaphragm I is disposed in a suitable recess in the plunger guideand clamped at its perimeter between the main body 4 and the guidemember by a suitable ring formed on the upper surface of the bodymember.

The plunger 9 reciprocates in the plunger guide 5, and the compressionspring 8 biases the plunger 9 downwardly. The adjustment cap 6 isthreaded upon the plunger guide 5, thereby enabling the operator toadjust the spring pressure, and thus regulate the pressure required toactuate the lever 1. The lever I is pivotally mounted at 23 upon theplunger guide 5, and has an arm Ia extending through a slot in the sidewall of the plunger guide, which arm engages the plunger 9 and raisesthe plunger when the lever "I is depressed.

With reference to Figure 3, it will be observed that the arm 1a isrounded, and that the plunger 8 has a rounded cavity receiving therounded end of the arm, thus providing a ball and socket connectionbetween the members.

The valve stem 1 l is threaded at its upper end, and this threadedportion extends through a central aperture in the diaphragm Iii. Thethreaded portion of the valve stem is threaded into the lower end of theplunger 9, and this serves to secure the valve stem and plunger togetherand to clamp the diaphragm between juxtapositioned faces thereof. Thestem and plunger thusly assembled constitute a valve core.

The removable nozzle and valve seat i2 is threaded in the main bodymember :3 and is provided with a suitable gasket for sealing the same tothe body member. It is also important to observe that the nozzle !2 hasa central cylindrical cavity which receives the valve stem i i andpermits the same to reciprocate freely therein.

The lower end of the valve stem is slightly larger in diameter than itscylindrical shank, and the enlarged head portion preferably has diagonalslots cut in its cylindrical face as shown in Figures 5 and 6 to providefor the passage of liquid from the back side to the front side of theenlarged head. The diagonal slots provide a twirling action to theliquid and steam, and greatly increases atomization of the liquiddischarged through the central orifice 2t in the nozzle iii. In thisrespect it is also important to observe that the external face of thevalve seat in nozzle l2 adjacent the orifice 24 is concave to assist inthe formation of a fog or mist or atomized liquid discharged from theorifice 24.

With particular reference to Figures 5 and 6, it is important to observethat the wall at the lower end of the nozzle E2 is very thin to providea minimum distance through the orifice 24 from the valve seat on theinner face of the lower end, to the external concave face of the lowerend. This feature is an important contribution in my valve constructionas it entirely eliminates condensation drip, when the valve is closed,and, by reason of this, and the relatively small space around the valvestem in the cavity of the valve seat, and the comparative small size ofthe chamber 2i, condensation or liquid blow-01f is also eliminated whenthe valve is first opened, thus providing uniform atomization from theinstant of opening of the valve and until it is entirely closed.

With reference especially to the three paragraphs next above it will benoted that the relation of orifice 24 in the nozzle E2, the cylindricalcavity thereof that receives the enlarged lower end or head of valvestem must be maintained in concentric relation to provide the bestformation of a fog or mist of atomized liquid discharged from theorifice. (The liquid serves as a lubricant). Therefore, precisiondimensions of each of the parts are necessary. No such requirementspertain to the bore of guide 5 and plunger 9 that slides freely thereinwithout a lubricant. It will be observed that by reason of the radialmovement or play between the guide and plunger, with the valve stem andhead depending therefrom, the head may center itself freely within thebore of the nozzle and of course without any tendency to bind.Obviously, the diaphragm, being of rubber, ofiers no impedence to thefloating relation of these parts.

This construction of the guide bearing in the nozzle, independent of themain body or housing comprised of casing i and bonnet 5, provides forthe use of a superior metal qualified for long service withoutcorrosion, wear or burdening the product with prohibitive cost formaterial or precision processing. It should also be noted that thisconstruction provides for the Wall surrounding the orifice beingconcavedly ground or lapped, through a simple inexpensive operation, toa knife edge thereby assisting materially in the attainment of thestated objects of this invention.

As also shown in Figures 5 and 6, the lower end of the valve stem H hasa plug 25 secured thereto that is preferably made from a phenol aldehydecondensation product, and, as illustrated in Figure 5, the lower face ofthis plug provides the sealing face on the valve stem II that engagesthe sealing face of the valve seat I2.

I claim:

1. In a valve comprising a casing having a chamber therein provided withan inlet and a spray orifice communicating therewith and a nozzledetachably mounted on said casing; said nozzle having a cylindricalcavity concentric with the chamber of said casing a wall in which saidspray orifice is located and a valve seat surrounding said orifice; abonnet having a chamber therein concentric with the chamber of saidcasing; a resilient diaphragm held at its periphery between the casingand bonnet for sealing the bonnet chamber from the casing chamber; thecombination of an axially-movable plunger mounted within the bonnetchamber for slidable engagement therewith and having its lower endsecured to the diaphragm; a movable valve stem positioned in the casingchamber and having its upper end secured to said plunger and thediaphragm and is lower end equipped with a head and plug-valve, the headslidably engaged with said cavity so that the plug-valve will beengageable with the valve seat in said nozzle; a spring operativelyassociated with the bonnet and the plunger for biasing the plug-valveinto engagement with the said valve seat to close the orifice; and anactuating member operatively associated with the bonnet and plunger foroperating the movable members against the action of said spring means toopen said orifice.

2. A valve structure comprising a casing having an axial-cylindricalpassageway therethrough; a discharge aperture in the Wall thereof, anoperating lever projecting into said chamher; a flexible diaphragmextending thereacross and dividing the casing into two chambers; a valvestem disposed in and slidably bearing against the cylindrical passagewayof one of said chambers; a valve plunger disposed in and slidablybearing against the cylindrical passageway of the other chamber andsecured to said stem with the diaphragm gripped therebetween in axialalignment to provide a valve core, a spring operatively associated withsaid casing and said core for closing said aperture after the operatinglever has raised said core to open the aperture.

3. A valve structure comprising a casing having an axial-cylindricalpassageway therethrough; a flexible diaphragm extending thereacross anddividing the easing into two chambers; a discharge aperture in the wallof one of said chambers; a valve stem disposed in and slidably bearingagainst the cylindrical passageway of the last designated chamber; avalve plunger disposed in and slidably bearing against the cylindricalpassageway of the other said chamber and secured to said stem with thediaphragm gripped therebetween in axial alignment to provide a valvecore; an operating lever projecting into said other chamber; a springoperatively associated with said casing and said core for closing saidaperture after the operat- 6! ing lever has raised said core to open theaperture.

WILLIAM M. CISSELL.

References Cited in the file of this patent UNITED STATES PATENTS NumberName Date 523,727 Mersereau July 31, 1894 593,732 Burck Nov. 16, 1897679,069 Croppi July 23, 1901 772,668 OBrien Oct. 18, 1904 1,081,102 DykeDec. 9, 1913 1,311,815 Harris July 29, 1919 1,561,646 Hull Nov. 17, 19251,672,366 Caldwell June 5, 1928 1,727,207 Kramer Sept. 3, 1929 2,298,680Clark Oct. 13, 1942 FOREIGN PATENTS Number Country Date 477,212 GreatBritain Dec. 20, 1937

